About CalzHub
Free, accurate online calculators built for India — updated for FY 2024-25.
What is CalzHub?
CalzHub is a free collection of online calculators designed specifically for Indian users. We cover personal finance (income tax, salary, EMI, SIP, GST), health (BMI), creator economy (YouTube and Instagram earnings), investment tools (stock average, mortgage), and productivity utilities (word count, currency converter).
Every calculator on CalzHub is built from verified formulas, updated for the latest Indian tax rules and financial regulations, and designed to give you results you can actually rely on — not rounded estimates built on outdated numbers.
Our Mission
Financial tools and tax calculators in India are often locked behind paywalls, filled with ads, or built on outdated data. CalzHub exists to change that. Our mission is straightforward: give every Indian access to accurate, fast, and free calculators — with no registration, no dark patterns, and no misleading numbers.
We keep CalzHub free through Google AdSense advertising. We do not sell your data, require sign-ups, or include affiliate links that bias our results. The calculations are and always will be independent of any financial institution.
Accuracy and Updates
All financial calculators are updated for FY 2024-25 and reflect the changes from Union Budget 2024:
- Standard deduction: ₹75,000 (new regime), ₹50,000 (old regime)
- Section 87A rebate: ₹25,000 rebate for taxable income up to ₹7 lakh under the new regime
- New tax slabs: 0% (up to ₹3L), 5% (₹3L–7L), 10% (₹7L–10L), 15% (₹10L–12L), 20% (₹12L–15L), 30% (above ₹15L)
- LTCG tax: 12.5% (up from 10%) on equity above ₹1.25L gain from FY 2024-25
- STCG tax: 20% (up from 15%) on equity held under 1 year from FY 2024-25
We update our calculators within days of any major policy change — Budget announcements, GST council decisions, RBI rate changes, and SEBI rule updates. If you find an outdated number, please contact us.
Important Disclaimer
CalzHub calculators are for educational and estimation purposes only. They are not a substitute for professional financial, tax, or legal advice.
- Income tax results do not account for all deductions, exemptions, or surcharges specific to your situation
- EMI and mortgage results assume fixed interest rates for the full tenure
- Investment return estimates (SIP, stock) are projections, not guarantees
- Always verify results with a chartered accountant, SEBI-registered advisor, or your bank
Our Calculators
Old vs new regime comparison, Section 87A rebate, standard deduction — updated for FY 2024-25 and Budget 2024.
CTC to in-hand salary with full PF, HRA, professional tax, and net take-home breakdown for Indian employees.
Loan EMI using the reducing-balance method for home loans (8.4–9.5% p.a.), car loans, and personal loans.
Systematic Investment Plan returns with compound growth — shows maturity value, wealth gained %, and invested amount.
Add or reverse GST with automatic CGST/SGST split across all four Indian GST rate slabs.
Body Mass Index using WHO global and Asia-Pacific (Indian) thresholds, with healthy weight range and advice.
Home loan EMI, total interest, and full year-by-year amortisation schedule.
Exact age in years/months/days, zodiac sign, day of week born, and days until next birthday.
Average buy price and unrealised P&L across multiple purchase lots for Indian equity investors.
Monthly AdSense and sponsorship income estimate by views, RPM, and monetised playback rate.
Influencer income estimate by followers, engagement rate, and content niche for Indian creators.
API spend estimate by model, token count, and daily request volume — per-request to annual cost.
Real-time word, character, sentence, and paragraph count with reading/speaking time and platform limit checks.
Live exchange rates for 150+ currencies updated every 24 hours — USD/INR, AED/INR, EUR/INR, and more.
Contact & Feedback
Found a bug, an outdated rate, or want to suggest a new calculator? We read every message. Reach us at our contact page.