Free Online Calculators

IQ and personality tests, Korean saju and name tools, pregnancy and health, loans and taxes, hours and dates — plus calculators for living and working in Korea and 10 countries.

Calculators by category

IQ TestPersonality TestMBTI CompatibilityK-pop Compatibility

🧠 Tests

Free IQ Test (120 Questions)Matrices, number series, verbal and logic with a 60-minute timer, IQ estimate and percentile.16 Personality Types Test120-question MBTI-style test with axis percentages, strengths and career fits.MBTI Compatibility ChartScore any two types: 8 chemistry scores, love and work styles, 16×16 chart.K-pop Compatibility TestMBTI × Korean zodiac match score with idol-group roles and a share card.
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🐉 Chinese zodiac by birth year (1940–2026) → 🇵🇭 13th month pay calculator 2026 (Philippines) — ₱15,000 to ₱100,000 salary guides💞 All 136 personality-type compatibility guides →🧠 What does your IQ score mean? (70–160) →