10Bii Calculator Pro is a fast, accurate financial and architectural calculator for professionals, students, and anyone who works with money or measurements. Everything is computed instantly on your device — no sign-in, no clutter.
FINANCIAL CALCULATOR
• Time Value of Money (TVM): solve for N, I/YR, PV, PMT, and FV
• Amortization schedules with principal, interest, and running balance
• Cash Flow analysis: NPV, IRR, and uneven cash flow series
• Business percentage tools for margins, markups, and more
• Interest rate conversion (nominal and effective rates)
STATISTICS
• One-variable and two-variable statistics
• Mean, standard deviation, and other summary values
• Linear regression with a visual regression plot
ARCHITECTURAL & ENGINEERING SCALES
• Metric scales (1:20, 1:50, 1:100, 1:500)
• Imperial architectural scales (1/4" = 1'-0")
• Engineering scales (1" = 20')
• Save your own custom scales for quick reuse
BUILT FOR SPEED AND COMFORT
• 10 memory registers (M0–M9) to store and recall values
• Chain (CHN) and Algebraic (ALG) evaluation modes
• Adjustable decimal places (0 / 2 / 4 / 6) and comma or period separators
• Optional key-click sound and vibration for a tactile, real-calculator feel
• Light and dark theme support
HISTORY, REPORTS & HELP
• Every calculation is auto-saved to History with one-tap reload
• Export clean, multi-page PDF reports (e.g., amortization schedules)
• Built-in formula library and user manual
PRIVACY FIRST
10Bii Calculator Pro works locally. Your calculations, history, saved scales, and memory values stay on your device in private app storage. There is no account and no upload of your data to us. The app is supported by ads through Google AdMob; you can opt out of personalized ads in your device settings.
Whether you're analyzing a loan, projecting cash flows, reviewing statistics, or converting architectural scales, 10Bii Calculator Pro gives you reliable results with a clean, modern interface.
Note: 10Bii Calculator Pro is a calculation tool. Results are for informational purposes only and are not financial, tax, legal, or professional advice. Always verify your results.
Financial & architectural calculator: TVM, amortization, cash flow, stats.