About
Calculators for real life
CalcBloom is a small set of fast, no-nonsense calculators for the everyday maths that actually comes up — splitting a bill, working out a discount, checking how many days until a deadline, or converting units for a recipe. Each tool is built to give you a clear answer in one screen, with no sign-up and no clutter.
Like the rest of the inblooms family, everything runs entirely in your browser. The numbers you type are never uploaded, stored or tracked — they stay on your device. The tools are free and work on phones, tablets and desktops.
Guide
Choosing the right calculator
Percentages, discounts and everyday changes
Use the percentage calculator for discounts, price increases, tax estimates, grade ratios and "what percent is this of that" questions. It is designed for quick comparisons where the formula matters less than a clear result and a readable breakdown.
Dates, D-days and anniversary counts
Use the date calculator when you need the gap between two dates, and the D-day calculator when you are tracking one target date, an exam, a discharge estimate, an anniversary or "today is day N" count. Date results use your browser's local calendar rules.
Money, health and shared bills
The loan calculator compares repayment methods and total interest, BMI gives a simple height-and-weight category, and the bill split calculator keeps group payments tidy with tip and rounding options. These calculators are estimates, not professional financial or medical advice.
Accuracy and privacy notes
CalcBloom uses deterministic browser-side formulas, so refreshing the page or changing language does not send your numbers anywhere. For bank offers, official exams, military service dates, medical decisions or taxes, use the result as a planning aid and confirm against the official source.