All tools
17 tools are live today and 0 more are in the pipeline. Every one of them is free, runs entirely in your browser and asks for nothing but the input it needs.
Live now
Word Scrambler & Solver
Unscramble letters and solve anagrams in 8 languages, or scramble your own text with a click. Free, instant and 100% in your browser.
Free · client-sideOpen tool →
Agency ROI Calculator
Work out retainer gross margin, client lifetime value, CAC payback and true lifecycle ROI for an agency engagement — instantly, in your browser.
Free · client-sideOpen tool →
Social Media Engagement Calculator
Calculate engagement rate per platform, compare it with industry ranges and estimate a sponsored post rate — free and entirely in your browser.
Free · client-sideOpen tool →
LLM API Cost Estimator
Estimate monthly LLM API spend across Claude, GPT, Gemini, DeepSeek and Grok from your request volume and token sizes. Prices verified and editable.
Free · client-sideOpen tool →
Grade & Final Exam Planner
Work out your current weighted grade and the exact score your final exam needs to hit your target — or whether that target is still reachable.
Free · client-sideOpen tool →
Days Between Dates Calculator
Count the exact days, weeks and business days between any two dates, with inclusive or elapsed counting. Timezone-safe and free.
Free · client-sideOpen tool →
Percentage & Discount Calculator
Four percentage modes in one page: percent of a value, percent change, sale discount, and the original price before a discount.
Free · client-sideOpen tool →
Tip & Bill Split Calculator
Work out the tip, sales tax and total, then split it between any number of people with the pennies distributed so the shares add up exactly.
Free · client-sideOpen tool →
Age Calculator
Your exact age in years, months and days — plus total days lived and a countdown to your next birthday. Timezone-safe and entirely private.
Free · client-sideOpen tool →
CPM & Ad Revenue Calculator
Solve CPM from a campaign, ad revenue from impressions, or the impressions needed to hit a revenue target — plus RPM per 1,000 pageviews.
Free · client-sideOpen tool →
Word & Character Counter
Live word and character counts, reading and speaking time, platform character limits and keyword density — all computed in your browser.
Free · client-sideOpen tool →
Compound Interest Calculator
Project investment growth from a lump sum plus regular contributions, with monthly, quarterly, annual or daily compounding and a doubling-time estimate.
Free · client-sideOpen tool →
Loan & Mortgage Payment Calculator
Work out the monthly repayment, total interest and true cost of a loan — and compare terms side by side to see what a shorter term is really worth.
Free · client-sideOpen tool →
UTM Campaign URL Builder
Build tagged campaign URLs with the five standard UTM parameters, with consistent normalisation and the GA4 pairing rule checked before you copy.
Free · client-sideOpen tool →
Text Case Converter & Formatter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, URL slugs, camelCase, PascalCase and snake_case — with undo.
Free · client-sideOpen tool →
Profit Margin & Markup Calculator
Work out gross profit, margin and markup from cost and price — or the price you need to hit a target margin, plus a price table for common margins.
Free · client-sideOpen tool →
YouTube Thumbnail Auditor
Upload a thumbnail to check its resolution, aspect ratio, size, contrast and more, then score its click-through potential out of 10.
Free · client-sideOpen tool →