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Everyday and financial calculators that run instantly in your browser - age, BMI, percentage, EMI, mortgage, compound interest, VAT, GPA, salary, date difference. No data ever leaves your device.
Calculate exact age in years, months, days, hours, and minutes from any birth date.
All-in-one percentage calculator - what is X%, % change, X is what % of Y.
Calculate Body Mass Index (BMI) in metric or imperial with category breakdown.
Calculate monthly loan payment, total interest, and amortization schedule.
Equated Monthly Installment calculator with principal/interest split.
Add or remove VAT at any rate - UK 20%, EU rates, or custom.
Find the gap between two dates in years, months, days, weeks, and hours.
Calculate compound interest with principal, contributions, rate, and frequency.
Calculate GPA from course grades on the 4.0 or custom scale.
Convert between annual, monthly, weekly, daily, and hourly pay.
Calculate monthly mortgage payment, total interest, and full amortization.
Count business (working) days between dates, skipping weekends.
Convert times across global time zones with DST awareness.
Build a countdown to any future date - copy as a shareable URL or HTML.
Check WCAG AA / AAA contrast ratio between text and background colors.
We design and ship internal tooling, dashboards, and customer-facing utilities. Tell us what you need and we'll scope it.