Field Notes
Practical details that don't fit on a calculator page. Pitfalls and nuances learned from daily use.
Living in Korea
- 2026-06-30~10 min read
Korean Units & Numbers for Foreigners: Pyeong, Age, Sizes, Distance & More
Every confusing Korean unit and number in one place — pyeong (area), Korean age & school grade, clothing/shoe sizes (US ↔ Korea), distance (ri/miles ↔ km), temperature (°F ↔ °C), and the business registration number. Each with a free instant-conversion tool.
Read - 2026-06-17~14 min read
Living in Korea as a Foreigner: The Complete Money, Visa & Admin Guide (2026)
Arrival (ARC, banking) → settling (rent, health insurance) → work & tax (year-end, flat tax) → staying (F-2-7, D-8) → leaving (pension refund). The whole journey of living in Korea, step by step, with free calculators and checklists.
Read - 2026-06-16~11 min read
Essential Apps for Living in Korea as a Foreigner (2026)
Which Korean apps work without a Korean number, a foreign card, or an ARC — and how to clear the PASS identity-verification wall. Category by category, with sign-up tips.
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Tax & Finance
- 2026-05-30~6 min read
Korean Business Registration Number — What the Checksum Tells You
The 1-3-7 weighted checksum that catches fake or mistyped Korean business numbers before you sign or wire money.
Read - 2026-05-23~7 min read
5 most common confusions in Korean progressive income tax
“Crossing a bracket means you earned less in the end” and other myths — debunked with actual numbers.
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Real Estate
- 2026-06-18~12 min read
Renting in Korea as a Foreigner: Jeonse, Wolse, Deposits & Your Rights
Jeonse vs wolse, the conversion rate, how to protect your deposit after the 2022–2023 fraud wave, and the change-of-residence-report trap every foreign tenant must know — with a step-by-step pre-signing checklist.
Read - 2026-05-30~7 min read
Korean Pyeong, Explained — Why 84㎡ is Called 25-Pyeong
Why Korean real estate uses pyeong alongside m², how 84㎡ maps to 25-pyeong, and what exclusive vs supply vs contract area really mean.
Read - 2026-05-23~6 min read
Got a Korean rent increase over 5%? 7 things to do immediately
If your Korean landlord proposes a 6% renewal increase, here are the 7 steps a tenant should take, in order.
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