Numbers you can trust, answers in seconds.
Fast, precise calculators for finance, health, and AI costs — built with arbitrary-precision math and verified against known benchmarks.
Finance
11Mortgage Payment Calculator
Estimate your monthly payment, total interest, and amortization breakdown.
EMI Calculator
Monthly EMI, total interest, and EMI by tenure.
Loan Calculator
Compare EMI and total interest across loan tenures.
SIP Calculator
Maturity value of a monthly SIP investment.
Compound Interest Calculator
Maturity value at any compounding frequency.
FD Calculator
Fixed Deposit maturity value, quarterly compounded.
RD Calculator
Recurring Deposit maturity value.
GST Calculator
Add or remove GST using current GST 2.0 rates.
Income Tax Calculator
India income tax, FY 2026-27, new vs old regime.
Salary Calculator
CTC to in-hand monthly salary breakdown.
ROI Calculator
Total return and annualized return (CAGR) on an investment.
Health
3AI Model Cost
8AI Token Cost Calculator
Estimate what your AI tokens cost per request, day, and month.
AI API Cost Calculator
Budget your AI API spend before you build.
LLM Cost Calculator
Compare LLM pricing side by side for your exact usage.
AI Model Cost Comparison
Every current GPT, Claude, and Gemini model, ranked by cost.
ChatGPT API Cost Calculator
GPT-5.6, GPT-5.1, and GPT-4o pricing for your usage.
OpenAI Token Cost Calculator
Token pricing across every current OpenAI model.
Claude API Cost Calculator
Anthropic Opus, Sonnet, and Haiku pricing for your usage.
Gemini API Cost Calculator
Google Gemini Flash and Pro pricing for your usage.
Tokens & Context
3AI Infrastructure
7RAG Cost Calculator
Indexing, retrieval, and generation cost for a RAG pipeline.
Embedding Cost Calculator
Cost to embed your document corpus for search.
AI Agent Cost Calculator
Multi-step tool-calling agent cost, with compounding context.
AI Fine-Tuning Cost Calculator
One-time training cost to fine-tune an OpenAI model.
GPU Cost Calculator
Cloud H100, A100, and B200 rental cost by provider.
AI Image Generation Cost Calculator
GPT Image and Imagen pricing per image, at scale.
AI Video Generation Cost Calculator
Sora and Veo pricing per second, at scale.