Calculators
Free online calculators for everyday math and financial calculations. Get instant results with our easy-to-use calculator tools.
FlexUtils Calculators handle everyday math and financial planning with full transparency. Every calculation shows a step-by-step breakdown of the formula used, so you can verify results independently rather than trusting a black box.
Our calculator suite covers percentage change calculations with detailed formula walkthroughs, compound interest projections with interactive charts and monthly SIP support across 10+ currencies, and India-specific home loan EMI calculations with amortization schedules and prepayment analysis for banks like SBI, HDFC, and ICICI.
All calculations run entirely in your browser. Financial figures — salaries, loan amounts, investment portfolios — are sensitive data that should not be transmitted to servers. Our calculators process everything locally with zero data collection, making them safe for personal financial planning, professional analysis, and educational use.
📊 Step-by-Step Breakdowns
See exactly how each result is calculated. Every formula is shown and explained, not hidden behind a calculate button.
🔒 Financial Privacy
Your salary, loan amounts, and investment figures stay in your browser. Zero data transmission, zero tracking.
⚡ Instant Results
No page reloads, no server calls. Results update in real-time as you type with interactive charts and breakdowns.
🇮🇳 India-Specific Tools
Home loan EMI calculator built for Indian banking conventions, with SBI, HDFC, and ICICI rate presets and amortization schedules.
Percentage Change: ((New Value − Old Value) ÷ Old Value) × 100. This formula works for both increases (positive result) and decreases (negative result).
Compound Interest: A = P × (1 + r/n)^(n×t), where P is principal, r is annual rate, n is compounding frequency, and t is time in years. With monthly SIP contributions, each installment compounds independently from its deposit date.
EMI (Equated Monthly Installment): EMI = P × r × (1+r)^n ÷ ((1+r)^n − 1), where P is loan principal, r is monthly interest rate, and n is total number of monthly payments. This is the standard reducing balance method used by Indian banks.