Data Quality88%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the tactical / medium bombers category.
01 / Overview
Mitsubishi Ki-21
Category
Country
Prime contractor
Production
1937–1944
Quantity
2,064
Operators
Conflicts
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
TACTICAL / MEDIUM BOMBERS · INTERWAR PERIOD
15
PERFORMANCE/PRICE
85
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the tactical / medium bombers category, regardless of era.
02 / Specs & Design
◎General3MOD.3
- First Flight1936
- Service Entry Year1938
- Crew5
◈Powerplant2MOD.2
- Engine TypeMitsubishi Ha101
- Number of Engines2
▣Performance2MOD.2
- Top Speed485 km/h
- Service Ceiling10,000 m
◇Dimensions & Weights1MOD.1
- Length16 m
◆Armament2MOD.2
- Weapons Payload750 kg
- Internal Gun; ** 5 × flexible Type 89 machine guns in nose, ventral, beam and tail positions ** 1 × Ho-103 machine gun in dorsal tur
▤Production3MOD.3
- Total Built2,064
- Operators2
- Variants57
⬢Service History3MOD.3
- Retirement Year1945
- Production Start1937
- Production End1944
03 / History
SERVICE LIFESPANStill in Service
- 1937Production started
- 1940Sale: Thailand (9 units)
- 1944Production ended
89
years in service
7
years in production
2,064
units produced
4
countries operating
ⓘ The producing country still actively operates it.
04 / Conflicts
MITSUBISHI KI-21 · CONFLICTS SERVED IN0% win
Total Conflicts
1
Victories
0
Ongoing
0
Losses
0
ⓘ Shown only from conflicts recorded in our database.
05 / Operators
Mitsubishi Ki-21SALES1records
| Year | Buyer | Quantity | Amount | Present Value (2025) |
|---|---|---|---|---|
| 1940 |  Thailand | 9 | — | — |
ⓘ "Present Value" is an estimated amount adjusted for inflation.
06 / MASS Score
TACTICAL / MEDIUM BOMBERS RANKING Tactical / Medium Bombers · Interwar Period
MASS RANKINGSMASS ↗
63TACTICAL / MEDIUM BOMBERS15INTERWAR PERIOD · TACTICAL / MEDIUM BOMBERS188JAPAN · ALL WEAPONS31PERFORMANCE/PRICE · TACTICAL / MEDIUM BOMBERS
ⓘ Rankings are within theTactical / Medium Bomberscategory.
📚 Sources