llms.txt
+92 −28
− > RedBison is a free, ad-free suite of 564 developer and product utility tools: JSON, regex, encoding, hashing, JWT, UUID, time and date, networking, images, diagrams, finance and health calculators, and product frameworks (SWOT, GAP, FMEA, PRD, lean canvas and more). No sign-up. Most tools run entirely in your browser; network tools (DNS, IP, SSL, HTTP requests) contact the services they name.− - [Speech to Text](https://redbison.dev/speech-to-text): Dictate into your microphone and watch the transcript appear live in 12 languages. Uses your browser's speech service, which in Chrome means Google's servers.− - [Software Compliance Checklist](https://redbison.dev/compliance-guide): Filter 24 laws and standards (GDPR, CCPA, HIPAA, PCI DSS, SOC 2, WCAG) by domain and region, then export a Markdown checklist or CSV report.− - [Inflation Calculator](https://redbison.dev/inflation-calculator): Convert dollars between any two years from 1913 to 2025 with official BLS CPI-U data, or project future prices and purchasing power at any inflation rate.− - [401(k) Calculator](https://redbison.dev/401k-calculator): Project your 401(k) at retirement with raises, any employer match formula and the 2026 IRS limits, including the new age 60 to 63 super catch-up.− - [House Affordability Calculator](https://redbison.dev/house-affordability-calculator): Find the highest home price your income supports under the 28/36 rule or FHA and VA limits, including tax, insurance and PMI, and see which limit holds you back.− - [Overtime Calculator](https://redbison.dev/overtime-calculator): Work out overtime pay at 1.5x, 2x or a custom rate, by weekly total or day by day, with the federal 40-hour rule and California daily overtime.− - [Paycheck Calculator](https://redbison.dev/paycheck-calculator): Estimate take-home pay per paycheck with 2026 federal brackets, Social Security, Medicare, 401(k), HSA and benefit deductions, plus a flat state and local tax rate.− - [Carbon Footprint Calculator](https://redbison.dev/carbon-footprint-calculator): Estimate yearly household CO2e from electricity, gas, oil, driving, flights and diet using EPA 2025 and UK DESNZ 2025 emission factors, broken down by source.− - [Bolt Torque Calculator](https://redbison.dev/bolt-torque-calculator): Tightening torque and clamp load for M3 to M36, UNC and UNF bolts in class 8.8, 10.9, 12.9 and SAE Grade 5 or 8, from T = K x F x d with nut factor presets.− - [RedBison Now Has 563 Free Tools: What's Included and What's New](https://redbison.dev/blog/redbison-563-free-tools-whats-new): A tour of all 12 categories and the 143 tools added since October 28: a new AI Tools category, PDF and video editing, statistics and physics calculators, and security utilities.− - [How Accurate Are RedBison's Tools? 7,331 Tests That Check the Answers](https://redbison.dev/blog/how-accurate-are-redbison-tools): The 7,331 automated tests that check our tools' answers, where the expected values come from, bugs they caught, the limits no test removes, and how to report a mistake.− - [401(k), Roth IRA and Annuities: The Maths Behind Retirement Accounts](https://redbison.dev/blog/retirement-accounts-guide): The 2026 limits, how match formulas really pay, when Roth beats traditional, and how an annuity turns a balance back into income.− - [How to Calculate Your Carbon Footprint from Your Bills](https://redbison.dev/blog/how-to-calculate-your-carbon-footprint): Turn kWh, therms, gallons, miles and flights into tonnes of CO2e with EPA 2025 and DESNZ 2025 factors, and see which part of a household footprint is biggest.− - [Take-Home Pay in 2026: How a US Paycheck Is Calculated](https://redbison.dev/blog/take-home-pay-paycheck-guide): Gross to net step by step with the 2026 federal brackets, the $16,100 standard deduction, Social Security up to $184,500, Medicare, 401(k) and HSA deductions and state tax.− - [Linux File Permissions and chmod: 755, 644 and Beyond](https://redbison.dev/blog/linux-file-permissions-chmod-guide): What read, write and execute mean on files and directories, octal and symbolic chmod, capital X, setuid, setgid and sticky, umask defaults, and safe recipes for web roots and SSH keys.− - [Word Count, Character Count and Reading Time Explained](https://redbison.dev/blog/word-count-and-reading-time-guide): Why word counters disagree, how emoji and accents are counted, reading and speaking speeds that hold up, words per page, and the real rules behind X, Bluesky and SMS limits.− - [Readability Formulas Explained: Flesch, Fog, SMOG and More](https://redbison.dev/blog/readability-formulas-explained): Where Flesch Reading Ease, Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau and ARI come from, worked calculations, what scores to aim for, and how to rewrite text that scores badly.− - [Morse Code: The Alphabet, Timing Rules and How to Learn It](https://redbison.dev/blog/morse-code-alphabet-and-timing-guide): International Morse from the telegraph to ITU-R M.1677-1, the dot-dash-gap timing, why PARIS sets the speed, Farnsworth spacing worked out, prosigns like SOS, and a learning plan.− - [The NATO Phonetic Alphabet: Words, Numbers and Why Alfa](https://redbison.dev/blog/nato-phonetic-alphabet-guide): The ICAO spelling alphabet from Alfa to Zulu, how it was chosen in the 1950s, why it is Alfa, Juliett and Niner, how to say numbers and symbols, and spelling passwords safely.− - [ASCII Art Text with FIGlet: Fonts, Smushing and Where to Use It](https://redbison.dev/blog/figlet-ascii-art-text-guide): How FIGlet turns text into banner letters, what is inside an .flf font file, the smushing rules, choosing fonts for code and terminals, and pasting banners without breaking them.− - [Box Breathing, 4-7-8 and the Physiological Sigh: How to Do Each One](https://redbison.dev/blog/breathing-techniques-guide): Exact counts, timings and common mistakes for box breathing, 4-7-8, slow 4-6 breathing and the physiological sigh, plus how to pair them with muscle relaxation.− - [Your Life in Weeks: The Grid, the Maths and How to Use It](https://redbison.dev/blog/life-in-weeks-guide): Where Tim Urban's life-in-weeks chart came from, why a year is 52.18 weeks and not 52, how to count the weeks you have lived, and what to do with the picture.− - [Small Daily Wellness Habits: Stress Journaling, Water Breaks and Laughter](https://redbison.dev/blog/wellness-tools-guide): Three small habits for a desk-bound day: writing stress down as causes and actions, drinking water on a schedule, and taking a deliberate laughter break.− - [How to Share or Embed Just Part of a YouTube Video](https://redbison.dev/blog/how-to-share-part-of-a-youtube-video): Start times in links, start and end in embeds, why quality follows the player size, privacy-enhanced mode, YouTube Clips, and what to do when a video will not embed.− ## Optional− - [Privacy Policy](https://redbison.dev/privacy)− - [Terms of Service](https://redbison.dev/tos)+ > RedBison is a free, ad-free suite of 636 developer and product utility tools: JSON, regex, encoding, hashing, JWT, UUID, time and date, networking, images, diagrams, finance and health calculators, and product frameworks (SWOT, GAP, FMEA, PRD, lean canvas and more). No sign-up. Most tools run entirely in your browser; network tools (DNS, IP, SSL, HTTP requests) contact the services they name.+ - [New and updated tools feed](https://redbison.dev/tools-rss.xml): Newly launched and substantively updated tools (Atom: https://redbison.dev/tools-feed.xml).+ - [Binary to Text Converter](https://redbison.dev/binary-text-converter): Encode text to binary or hex bytes and decode back with strict UTF-8, so accents and emoji round-trip correctly and invalid bytes get a clear error, not garbage.+ - [XML to JSON Converter](https://redbison.dev/xml-to-json-converter): Convert XML to JSON in the browser: validated first with a line number on errors, attributes under an @_ prefix, repeated elements as arrays.+ - [Markdown to HTML Converter](https://redbison.dev/markdown-to-html-converter): Paste Markdown and get clean HTML with GitHub tables, strikethrough and optional single-newline line breaks, plus a sandboxed preview and one-click copy.+ - [HTML to Markdown Converter](https://redbison.dev/html-to-markdown-converter): Turn pasted HTML into tidy Markdown with # headings, - bullets and fenced code blocks. Runs in your browser and drops markup Markdown cannot express.+ - [Number Base Converter](https://redbison.dev/number-base-converter): Convert binary, hex, octal, decimal and any base from 2 to 36, with integers of any size, exact fractions and two's complement at 8, 16, 32 or 64 bits.+ - [IEEE 754 Float Converter](https://redbison.dev/ieee-754-float-converter): See the sign, exponent and fraction bits of half, single and double precision floats, the exact value stored, the rounding error and the neighbouring floats.+ - [Hex to RGB Converter](https://redbison.dev/hex-to-rgb-converter): Paste #abc, #aabbccdd, rgb() or hsl() and get the same color in hex, RGB and HSL with alpha and a live swatch. Reads 3, 4, 6 and 8 digit hex codes.+ - [Military Time Converter](https://redbison.dev/military-time-converter): Convert military time to regular 12-hour time and back, both directions at once, with the spoken reading of each time and a chart from 0000 to 2359.+ - [Paper Size Converter](https://redbison.dev/paper-size-converter): Exact dimensions for A0 to A7, B0 to B5, Letter, Legal, Tabloid, Executive and Half Letter in mm, cm and inches, with the closest match across systems.+ - [Speech to Text](https://redbison.dev/speech-to-text): Dictate into your microphone and watch the transcript appear live in 19 languages. Uses your browser's speech service, which in Chrome means Google's servers.+ - [Software Compliance Checklist](https://redbison.dev/compliance-guide): Filter 31 laws and standards (GDPR, CCPA, HIPAA, PCI DSS, SOC 2, WCAG) by domain and region, then export a Markdown checklist or CSV report.+ #### [Fundraising & Equity](https://redbison.dev/category/startup-tools/fundraising-equity)+ - [Cap Table and Dilution Calculator](https://redbison.dev/cap-table-calculator): Model your cap table through priced rounds: price per share, new shares, option pool top-ups and every holder's fully diluted ownership after each round.+ - [Option Pool Shuffle Calculator](https://redbison.dev/option-pool-calculator): Size the option pool top-up a term sheet requires and see the effective pre-money when the new pool is carved out of the pre-money instead of added after.+ - [Barbell Plate Calculator](https://redbison.dev/barbell-plate-calculator): Find which plates to load on each side of the bar for any target weight, with collars and the plates you own, plus the nearest loads when it cannot be exact.+ - [RPE Calculator](https://redbison.dev/rpe-calculator): Estimate your 1RM from a set's weight, reps and RPE with the Helms RIR chart, then get the load for your next set at any reps and RPE, rounded to real plates.+ - [Interval Timer](https://redbison.dev/interval-timer): A free HIIT and Tabata timer with work, rest, rounds, sets and sound cues. It keeps accurate time in a background tab and keeps your screen awake while it runs.+ - [Inflation Calculator](https://redbison.dev/inflation-calculator): Convert dollars between any two years since 1913 with official BLS CPI-U annual data, or project future prices and purchasing power at any inflation rate.+ - [401(k) Calculator](https://redbison.dev/401k-calculator): Project your 401(k) at retirement with raises, any employer match formula and the IRS contribution limits, including the age 60 to 63 super catch-up.+ - [House Affordability Calculator](https://redbison.dev/house-affordability-calculator): Find the highest home price your income supports under the 28/36 rule, FHA and VA limits, an income multiple or a loan-to-value cap, with tax, insurance and PMI.+ - [Balance Transfer Calculator](https://redbison.dev/balance-transfer-calculator): See whether a 0% balance transfer saves money after the fee, how much is still owed when the promo rate ends, and the payment that clears it in time.+ - [Debt Consolidation Calculator](https://redbison.dev/debt-consolidation-calculator): Compare paying your current debts with one consolidation loan: new payment, APR including the origination fee, payoff date and total interest plus fees.+ - [Overtime Calculator](https://redbison.dev/overtime-calculator): Overtime pay at 1.5x, 2x or a custom rate, weekly or day by day: US federal and California rules, plus Canadian, Indian, Australian, Philippine and Singapore rules.+ - [Paycheck Calculator](https://redbison.dev/paycheck-calculator): Estimate take-home pay per paycheck with federal tax brackets, Social Security, Medicare, 401(k), HSA and benefit deductions, plus a flat state and local tax rate.+ - [Number to Words Converter](https://redbison.dev/number-to-words-converter): Spell out any number up to 999 trillion in US English: cardinal words, the ordinal form and the exact amount line for a check, with decimals read digit by digit.+ - [Ring Size Converter](https://redbison.dev/ring-size-converter): Convert US ring sizes 3 to 13 into UK letters, EU circumference and Japanese sizes, or find the size from a measured inside diameter in millimeters.+ - [Carbon Footprint Calculator](https://redbison.dev/carbon-footprint-calculator): Estimate yearly household CO2e from electricity, gas, oil, driving, flights and diet using the latest EPA and UK DESNZ emission factors, broken down by source.+ - [Stoichiometry Calculator](https://redbison.dev/stoichiometry-calculator): Type any reaction, balanced or not, and convert grams, moles, gas litres or particles of one substance into any other, with the mole ratio and each step shown.+ - [Limiting Reactant Calculator](https://redbison.dev/limiting-reactant-calculator): Enter a reaction and the amount of each reactant to find the limiting reagent, the theoretical yield of every product and how much excess reactant is left over.+ - [Percent Yield Calculator](https://redbison.dev/percent-yield-calculator): Percent yield from actual and theoretical yield, or straight from a reaction and the limiting reactant mass. Solves for any value and computes atom economy.+ #### [Unit Converters](https://redbison.dev/category/calculators/unit-converters)+ - [Length Converter](https://redbison.dev/length-converter): Convert meters, feet, inches, miles, yards and kilometers to every other length unit at once, with the exact 1959 definitions shown in the working.+ - [Weight Converter](https://redbison.dev/weight-converter): Convert kilograms, pounds, ounces, stone, grams and all three tons in one step, with every result traced to the exact 1 lb = 0.45359237 kg definition.+ - [Temperature Converter](https://redbison.dev/temperature-converter): Convert Celsius, Fahrenheit, Kelvin and Rankine with the offset formulas written out, reference points like -40 and absolute zero, and exportable results.+ - [Volume Converter](https://redbison.dev/volume-converter): Convert liters, US and UK gallons, cups, pints, quarts and fluid ounces together, with the 231 cubic inch and 4.54609 L gallon definitions shown.+ - [Area Converter](https://redbison.dev/area-converter): Convert square feet, square meters, acres, hectares and square yards in one pass, with every acre figure tied to the exact 4,046.8564224 m² definition.+ - [Speed Converter](https://redbison.dev/speed-converter): Convert a speed between mph, km/h, knots, m/s, ft/s and Mach in one step, with exact factors like 1 mph = 0.44704 m/s and worked conversion steps.+ - [Pressure Converter](https://redbison.dev/pressure-converter): Convert pressure between psi, bar, kPa, MPa, atm, Torr, mmHg and inHg with the exact factor 1 psi = 6.894757 kPa, shown step by step.
Showing the first 40 of each.