Math & Unit Converters
Fast scientific calculator, retail discount calculations, percentage variances, and metric-imperial unit conversions at your fingertips. The Calconova Math & Unit Converters directory brings together 25 verified calculators tailored to Singapore statutory regulations and international standards. Every tool runs locally in your browser on our enterprise Decimal.js (IEEE-754) math engine with zero floating-point drift and full formula transparency.
Singapore PSLE AL Score & O-Level L1R5 / L1R4 Calculator (2026)
Calculate Singapore PSLE Achievement Levels (AL 4-32 & Full SBB Groups) and GCE O-Level L1R5 / L1R4 net scores with LEAPS 2.0 CCA & Higher Mother Tongue bonus deductions.
Singapore University CAP / GPA (NUS, NTU, SMU) & S/U Calculator
Calculate Singapore university CAP / GPA across NUS, NTU (5.0 scale), SMU (4.3 scale). Factor in prior academic standing and simulate the S/U grade exclusion boost.
Standard Calculator
Fast and precise online calculator with percentage and memory functions.
Percentage Calculator
Calculate percentage increase, decrease, sales discount, and proportions.
Unit Converter
Convert length, weight, temperature, and digital storage units instantly.
Area Calculator
Calculate area for rectangles, squares, triangles, circles, circle sectors, trapezoids, parallelograms, and ellipses.
Perimeter Calculator
Calculate the perimeter of rectangles, triangles, circles, and polygons.
Volume Calculator
Calculate 3D volume, capacity in liters, and mass for cubes, cylinders, spheres, cones, pyramids, tanks, and prisms.
Golden Ratio Calculator
Calculate golden ratio proportions (Phi: 1.618033) for design and architecture.
GCD & LCM Calculator
Find Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of 2 or 3 numbers.
Factorial Calculator
Calculate the exact factorial (n!) value of any non-negative integer.
Combination Calculator
Calculate combinations nCr (order does not matter).
Permutation Calculator
Calculate permutations nPr (where order matters).
Square & Nth Root Calculator
Calculate square roots, cube roots, and any nth root of a number.
Exponent Calculator (Power)
Calculate exponent power x raised to the power of y (x^y).
Standard Deviation Calculator
Calculate mean, variance, and standard deviation for population or sample.
Modulo Calculator (A mod B)
Calculate the remainder of integer division (A mod B).
Ratio & Proportion Calculator
Solve for the unknown value (D) in direct and inverse proportions with step-by-step logic.
Random Number Generator
Generate single or multiple unique random numbers for lotteries, raffles, and simulations.
Square Meter Calculator (m²)
Calculate net square meters (m²), tile/flooring waste allowance, perimeter baseboards, and costs.
Prime Factorization Calculator
Find all prime factors and exponential decomposition of any integer.
Inch to CM Converter
Convert inches to centimeters and centimeters to inches instantly.
Miles to KM Converter
Convert land miles, nautical miles, and kilometers precisely.
Number Base Converter
Convert numbers between Binary, Octal, Decimal, and Hexadecimal.
Math & Units What You Need to Know
All tools in Calconova are engineered with institutional financial and scientific formulas. The enterprise decimal.js engine is utilized to eliminate floating-point rounding errors typical of standard JavaScript applications.
All calculations execute directly on your local device (Edge/Client-side); none of your data is stored on remote servers, guaranteeing 100% privacy.
All calculations, amortizations, and scenario projections displayed on this page are strictly for informational and educational purposes. Nothing herein constitutes investment, financial, tax, or legal advice. Actual CPF interest rates, ABSD criteria, COE prices, and bank mortgage rates may vary. Calconova explicitly disclaims all liability for any decisions taken based upon these calculations. Consult a MAS-licensed financial adviser or IRAS/CPF officer prior to executing financial commitments.