how many lights do i need for my christmas tree?
follow this as a general guide for how many of each type of light you'll need for an even covering of your tree height.  
twinkle lights  
90cm / 3ft           200 - 360  
120cm / 4ft         360 - 480  
150cm / 5ft         480 - 560  
180cm / 6ft         560 - 680  
210cm / 7ft         680 - 720  
240cm / 8ft         720 - 880  
270cm / 9ft         880 - 920  
300cm / 10ft      920 - 1000  
cluster lights  
90cm / 3ft           768 - 1128  
120cm / 4ft         1000 - 1250  
150cm / 5ft         1250 - 1512  
180cm / 6ft         1512 - 2000  
210cm / 7ft         2000 - 2500  
240cm / 8ft         2500 - 3000  
300cm / 10ft      3000 – 3500  
compact lights  
90cm / 3ft           500 - 1000  
120cm / 4ft         1000 - 1500  
150cm / 5ft         1500 - 2000  
180cm / 6ft         2000 - 2500  
210cm / 7ft         2500 - 3000  
240cm / 8ft         3000 - 3500  
270cm / 9ft         3500 - 4000  
300cm / 10ft      4000 – 4500
follow this as a general guide for how many of each type of light you'll need for an even covering of your tree height.  
twinkle lights  
90cm / 3ft           200 - 360  
120cm / 4ft         360 - 480  
150cm / 5ft         480 - 560  
180cm / 6ft         560 - 680  
210cm / 7ft         680 - 720  
240cm / 8ft         720 - 880  
270cm / 9ft         880 - 920  
300cm / 10ft      920 - 1000  
cluster lights  
90cm / 3ft           768 - 1128  
120cm / 4ft         1000 - 1250  
150cm / 5ft         1250 - 1512  
180cm / 6ft         1512 - 2000  
210cm / 7ft         2000 - 2500  
240cm / 8ft         2500 - 3000  
300cm / 10ft      3000 – 3500  
compact lights  
90cm / 3ft           500 - 1000  
120cm / 4ft         1000 - 1500  
150cm / 5ft         1500 - 2000  
180cm / 6ft         2000 - 2500  
210cm / 7ft         2500 - 3000  
240cm / 8ft         3000 - 3500  
270cm / 9ft         3500 - 4000  
300cm / 10ft      4000 – 4500