Directory
Every calculator, one shelf.
Fifteen precision tools across finance, maths, health and time. Each card opens a full workstation — working calculator, formula, worked example, pro tips and FAQs. Search or filter to find yours in seconds.
15 of 15 calculators
BMI Calculator
Know your Body Mass Index in seconds — with healthy-range context.
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Percentage Calculator
What is X% of Y? What % is X of Y? Answered with steps.
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Percentage Increase / Decrease Calculator
Old → new percent change, with increase vs decrease explained.
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Age Calculator
Exact age in years, months, days — plus totals and next birthday.
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Date Difference Calculator
Days between dates — with weekdays, weekends and inclusive counts.
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Time Calculator
Hours between times, shift lengths and add-duration maths.
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Discount Calculator
Sale price, savings and stacked discounts — with optional tax.
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Tip Calculator
Fair tips and clean bill splits — per-person totals included.
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Loan Calculator
Monthly payment, total interest and true cost of any loan.
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EMI Calculator
Equated Monthly Instalment for home, car and personal loans.
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Compound Interest Calculator
Growth on growth — future value with contributions shown yearly.
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Simple Interest Calculator
Linear interest on principal — loans, deposits and late fees.
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GST Calculator
Add or strip GST — net, tax, gross plus CGST/SGST split.
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Fraction Calculator
Add, subtract, multiply, divide and simplify fractions exactly.
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Average Calculator
Mean, median, range and count — paste any number list.
Open calculatorHow to choose the right calculator
Start from the decision, not the maths. Comparing loans? Open the Loan and EMI calculators side-by-side and sort by total interest, not monthly payment. Checking a sale? The Discount calculator handles stacked codes and tax; the Percentage Change tool verifies the retailer's “was/now” claim. Splitting dinner? Tip first, then Average if one diner itemises. For school cut-offs and notice periods, Age and Date Difference are day-exact where spreadsheets round.
Every tool follows the same contract: validated inputs with clear errors, Calculate and Reset controls, a result panel with steps, and a field guide below. If you can use one DailyCalc tool, you can use all hundred we plan to ship.